| For the Six Months Ended June 30, |
|---|
| (Thousands of Dollars) | 2026 | 2025 |
|---|
| Operating Activities: |
|---|
| Net Income | $269,545 | $294,877 |
|---|
| Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities: |
|---|
| Depreciation | 224,775 | 214,396 |
|---|
| Deferred Income Taxes | (27,425) | (34,392) |
|---|
| Uncollectible Expense | 9,842 | 10,118 |
|---|
| Pension, SERP, and PBOP Income, Net | (9,214) | (7,079) |
|---|
| Regulatory Over/(Under) Recoveries, Net | 67,550 | (101,300) |
|---|
| Amortization of Regulatory Assets, Net | 202,095 | 418,033 |
|---|
| Cost of Removal Expenditures | (28,013) | (33,705) |
|---|
| Other | 10,711 | 8,996 |
|---|
| Changes in Current Assets and Liabilities: |
|---|
| Receivables and Unbilled Revenues, Net | 10,050 | (626) |
|---|
| Taxes Receivable/Accrued, Net | (159,800) | 56,582 |
|---|
| Accounts Payable | (119,101) | (97,388) |
|---|
| Other Current Assets and Liabilities, Net | 46,894 | 25,100 |
|---|
| Net Cash Flows Provided by Operating Activities | 497,909 | 753,612 |
|---|
| Investing Activities: |
|---|
| Investments in Property, Plant and Equipment | (511,487) | (438,153) |
|---|
| Net Cash Flows Used in Investing Activities | (511,487) | (438,153) |
|---|
| Financing Activities: |
|---|
| Cash Dividends on Common Stock | (176,800) | (330,000) |
|---|
| Cash Dividends on Preferred Stock | (2,779) | (2,779) |
|---|
| Issuance of Long-Term Debt | — | 400,000 |
|---|
| Increase/(Decrease) in Notes Payable to Eversource Parent | 107,000 | (280,000) |
|---|
| Other Financing Activities | (911) | (4,520) |
|---|
| Net Cash Flows Used in Financing Activities | (73,490) | (217,299) |
|---|
| Net (Decrease)/Increase in Cash and Restricted Cash | (87,068) | 98,160 |
|---|
| Cash and Restricted Cash - Beginning of Period | 88,676 | 2,109 |
|---|
| Cash and Restricted Cash - End of Period | $1,608 | $100,269 |
|---|
| (Thousands of Dollars) | As of June 30, 2026 | As of December 31, 2025 |
|---|
| ASSETS |
|---|
| Current Assets: |
|---|
| Cash | $15,356 | $8,302 |
|---|
| Receivables, Net (net of allowance for uncollectible accounts of $141,099 and $132,561 as of June 30, 2026 and December 31, 2025, respectively) | 591,679 | 616,280 |
|---|
| Accounts Receivable from Affiliated Companies | 134,956 | 280,099 |
|---|
| Unbilled Revenues | 55,520 | 56,948 |
|---|
| Materials, Supplies and REC Inventory | 185,871 | 210,865 |
|---|
| Regulatory Assets | 1,056,092 | 978,754 |
|---|
| Derivative Assets | 115,114 | 91,011 |
|---|
| Prepayments and Other Current Assets | 26,550 | 90,040 |
|---|
| Total Current Assets | 2,181,138 | 2,332,299 |
|---|
| Property, Plant and Equipment, Net | 15,911,988 | 15,308,896 |
|---|
| Deferred Debits and Other Assets: |
|---|
| Regulatory Assets | 1,543,297 | 1,823,522 |
|---|
| Prepaid Pension and PBOP | 832,749 | 804,109 |
|---|
| Other Long-Term Assets | 288,315 | 264,073 |
|---|
| Total Deferred Debits and Other Assets | 2,664,361 | 2,891,704 |
|---|
| Total Assets | $20,757,487 | $20,532,899 |
|---|
| LIABILITIES AND CAPITALIZATION |
|---|
| Current Liabilities: |
|---|
| Notes Payable | $63,000 | $245,445 |
|---|
| Long-Term Debt – Current Portion | 700,000 | 300,000 |
|---|
| Accounts Payable | 566,975 | 558,227 |
|---|
| Accounts Payable to Affiliated Companies | 126,697 | 198,085 |
|---|
| Obligations to Third-Party Suppliers | 164,749 | 179,757 |
|---|
| Regulatory Liabilities | 775,303 | 650,813 |
|---|
| Other Current Liabilities | 175,456 | 208,979 |
|---|
| Total Current Liabilities | 2,572,180 | 2,341,306 |
|---|
| Deferred Credits and Other Liabilities: |
|---|
| Accumulated Deferred Income Taxes | 2,158,686 | 2,087,287 |
|---|
| Regulatory Liabilities | 1,728,295 | 1,702,059 |
|---|
| Derivative Liabilities | 390,341 | 753,149 |
|---|
| Other Long-Term Liabilities | 418,630 | 401,625 |
|---|
| Total Deferred Credits and Other Liabilities | 4,695,952 | 4,944,120 |
|---|
| Long-Term Debt | 5,641,846 | 5,645,638 |
|---|
| Preferred Stock Not Subject to Mandatory Redemption | 43,000 | 43,000 |
|---|
| Common Stockholder's Equity: |
|---|
| Common Stock | — | — |
|---|
| Capital Surplus, Paid In | 4,496,842 | 4,238,842 |
|---|
| Retained Earnings | 3,307,495 | 3,319,768 |
|---|
| Accumulated Other Comprehensive Income | 172 | 225 |
|---|
| Common Stockholder's Equity | 7,804,509 | 7,558,835 |
|---|
| Commitments and Contingencies (Note 9) |
|---|
| Total Liabilities and Capitalization | $20,757,487 | $20,532,899 |
|---|
| For the Three Months Ended June 30, | For the Six Months Ended June 30, |
|---|
| (Thousands of Dollars) | 2026 | 2025 | 2026 | 2025 |
|---|
| Operating Revenues | $937,889 | $868,925 | $2,068,977 | $1,883,152 |
|---|
| Operating Expenses: |
|---|
| Purchased Power and Transmission | 227,137 | 225,716 | 537,295 | 534,662 |
|---|
| Operations and Maintenance | 190,038 | 168,365 | 386,708 | 342,503 |
|---|
| Depreciation | 119,969 | 109,331 | 239,306 | 217,346 |
|---|
| Amortization of Regulatory Assets, Net | 15,263 | 15,435 | 89,979 | 67,719 |
|---|
| Energy Efficiency Programs | 85,009 | 44,258 | 193,262 | 107,697 |
|---|
| Taxes Other Than Income Taxes | 83,912 | 76,187 | 159,621 | 152,024 |
|---|
| Total Operating Expenses | 721,328 | 639,292 | 1,606,171 | 1,421,951 |
|---|
| Operating Income | 216,561 | 229,633 | 462,806 | 461,201 |
|---|
| Interest Expense | 72,436 | 55,407 | 152,712 | 114,627 |
|---|
| Other Income, Net | 54,098 | 47,715 | 105,783 | 94,009 |
|---|
| Income Before Income Tax Expense | 198,223 | 221,941 | 415,877 | 440,583 |
|---|
| Income Tax Expense | 44,466 | 53,012 | 96,170 | 104,479 |
|---|
| Net Income | $153,757 | $168,929 | $319,707 | $336,104 |
|---|
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
| For the Three Months Ended June 30, | For the Six Months Ended June 30, |
|---|
| (Thousands of Dollars) | 2026 | 2025 | 2026 | 2025 |
|---|
| Net Income | $153,757 | $168,929 | $319,707 | $336,104 |
|---|
| Other Comprehensive Loss, Net of Tax: |
|---|
| Changes in Funded Status of SERP Benefit Plan | (31) | (5) | (63) | (12) |
|---|
| Qualified Cash Flow Hedging Instruments | 5 | 5 | 10 | 10 |
|---|
| Other Comprehensive Loss, Net of Tax | (26) | — | (53) | (2) |
|---|
| Comprehensive Income | $153,731 | $168,929 | $319,654 | $336,102 |
|---|
CONDENSED CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY
| For the Six Months Ended June 30, 2026 |
|---|
| Common Stock · CapitalSurplus,Paid In · RetainedEarnings · AccumulatedOtherComprehensiveIncome · TotalCommonStockholder'sEquity |
|---|
| (Thousands of Dollars, Except Stock Information) · Stock · Amount |
|---|
| Balance as of January 1, 2026 | 200 | $— | | $4,238,842 | | $3,319,768 | | $225 | $7,558,835 |
|---|
| Net Income | | 165,950 | | 165,950 | |
|---|
| Dividends on Preferred Stock | | (490) | | (490) | |
|---|
| Capital Contributions from Eversource Parent | | 258,000 | | 258,000 | |
|---|
| Other Comprehensive Loss | | (27) | | (27) | |
|---|
| Balance as of March 31, 2026 | 200 | — | | 4,496,842 | | 3,485,228 | | 198 | 7,982,268 |
|---|
| Net Income | | 153,757 | | 153,757 | |
|---|
| Dividends on Preferred Stock | | (490) | | (490) | |
|---|
| Dividends on Common Stock | | (331,000) | | (331,000) | |
|---|
| Other Comprehensive Loss | | (26) | | (26) | |
|---|
| Balance as of June 30, 2026 | 200 | $— | | $4,496,842 | | $3,307,495 | | $172 | $7,804,509 |
|---|
| For the Six Months Ended June 30, 2025 |
|---|
| Common Stock · CapitalSurplus,Paid In · RetainedEarnings · AccumulatedOtherComprehensiveLoss · TotalCommonStockholder'sEquity |
|---|
| (Thousands of Dollars, Except Stock Information) · Stock · Amount |
|---|
| Balance as of January 1, 2025 | 200 | $— | | $3,788,842 | | $3,127,105 | | $(141) | $6,915,806 |
|---|
| Net Income | | 167,175 | | 167,175 | |
|---|
| Dividends on Preferred Stock | | (490) | | (490) | |
|---|
| Dividends on Common Stock | | (436,000) | | (436,000) | |
|---|
| Capital Contributions from Eversource Parent | | 100,000 | | 100,000 | |
|---|
| Other Comprehensive Loss | | (2) | | (2) | |
|---|
| Balance as of March 31, 2025 | 200 | — | | 3,888,842 | | 2,857,790 | | (143) | 6,746,489 |
|---|
| Net Income | | 168,929 | | 168,929 | |
|---|
| Dividends on Preferred Stock | | (490) | | (490) | |
|---|
| Balance as of June 30, 2025 | 200 | $— | | $3,888,842 | | $3,026,229 | | $(143) | $6,914,928 |
|---|
| For the Six Months Ended June 30, |
|---|
| (Thousands of Dollars) | 2026 | 2025 |
|---|
| Operating Activities: |
|---|
| Net Income | $319,707 | $336,104 |
|---|
| Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities: |
|---|
| Depreciation | 239,306 | 217,346 |
|---|
| Deferred Income Taxes | 48,544 | 21,446 |
|---|
| Uncollectible Expense | 15,604 | 14,002 |
|---|
| Pension, SERP and PBOP Income, Net | (22,439) | (19,942) |
|---|
| Regulatory (Under)/Over Recoveries, Net | (32,099) | 52,121 |
|---|
| Amortization of Regulatory Assets, Net | 89,979 | 67,719 |
|---|
| Cost of Removal Expenditures | (24,095) | (49,103) |
|---|
| Other | (32,994) | (3,324) |
|---|
| Changes in Current Assets and Liabilities: |
|---|
| Receivables and Unbilled Revenues, Net | 158,212 | (107,269) |
|---|
| Taxes Receivable/Accrued, Net | 52,335 | 1,038 |
|---|
| Accounts Payable | (127,987) | (55,534) |
|---|
| Other Current Assets and Liabilities, Net | (57,945) | (80,994) |
|---|
| Net Cash Flows Provided by Operating Activities | 626,128 | 393,610 |
|---|
| Investing Activities: |
|---|
| Investments in Property, Plant and Equipment | (773,806) | (775,162) |
|---|
| Net Cash Flows Used in Investing Activities | (773,806) | (775,162) |
|---|
| Financing Activities: |
|---|
| Cash Dividends on Common Stock | (331,000) | (436,000) |
|---|
| Cash Dividends on Preferred Stock | (980) | (980) |
|---|
| Issuance of Long-Term Debt | 700,000 | 800,000 |
|---|
| Retirement of Long-Term Debt | (300,000) | — |
|---|
| Capital Contributions from Eversource Parent | 258,000 | 100,000 |
|---|
| Decrease in Notes Payable | (182,445) | (74,782) |
|---|
| Other Financing Activities | (5,230) | (9,110) |
|---|
| Net Cash Flows Provided by Financing Activities | 138,345 | 379,128 |
|---|
| Net Decrease in Cash and Restricted Cash | (9,333) | (2,424) |
|---|
| Cash and Restricted Cash - Beginning of Period | 25,944 | 9,023 |
|---|
| Cash and Restricted Cash - End of Period | $16,611 | $6,599 |
|---|
| (Thousands of Dollars) | As of June 30, 2026 | As of December 31, 2025 |
|---|
| ASSETS |
|---|
| Current Assets: |
|---|
| Cash and Cash Equivalents | $56,074 | $13,665 |
|---|
| Receivables, Net (net of allowance for uncollectible accounts of $24,931 and $23,547 as of June 30, 2026 and December 31, 2025, respectively) | 219,539 | 214,117 |
|---|
| Accounts Receivable from Affiliated Companies | 21,168 | 24,338 |
|---|
| Unbilled Revenues | 55,002 | 62,446 |
|---|
| Materials, Supplies and REC Inventory | 78,682 | 58,879 |
|---|
| Regulatory Assets | 142,236 | 119,871 |
|---|
| Special Deposits | 34,418 | 38,343 |
|---|
| Prepayments and Other Current Assets | 28,803 | 19,212 |
|---|
| Total Current Assets | 635,922 | 550,871 |
|---|
| Property, Plant and Equipment, Net | 5,632,513 | 5,507,663 |
|---|
| Deferred Debits and Other Assets: |
|---|
| Regulatory Assets | 821,386 | 841,203 |
|---|
| Prepaid Pension and PBOP | 118,512 | 111,833 |
|---|
| Other Long-Term Assets | 25,847 | 17,661 |
|---|
| Total Deferred Debits and Other Assets | 965,745 | 970,697 |
|---|
| Total Assets | $7,234,180 | $7,029,231 |
|---|
| LIABILITIES AND CAPITALIZATION |
|---|
| Current Liabilities: |
|---|
| Notes Payable to Eversource Parent | $2,100 | $49,300 |
|---|
| Rate Reduction Bonds – Current Portion | 43,210 | 43,210 |
|---|
| Accounts Payable | 166,674 | 179,137 |
|---|
| Accounts Payable to Affiliated Companies | 31,781 | 45,277 |
|---|
| Obligations to Third-Party Suppliers | 36,624 | 37,584 |
|---|
| Renewable Portfolio Standards Compliance Obligations | 33,288 | 20,730 |
|---|
| Accrued Interest | 37,061 | 35,224 |
|---|
| Regulatory Liabilities | 150,745 | 118,443 |
|---|
| Other Current Liabilities | 32,627 | 41,604 |
|---|
| Total Current Liabilities | 534,110 | 570,509 |
|---|
| Deferred Credits and Other Liabilities: |
|---|
| Accumulated Deferred Income Taxes | 824,718 | 806,270 |
|---|
| Regulatory Liabilities | 432,400 | 417,442 |
|---|
| Other Long-Term Liabilities | 49,185 | 46,669 |
|---|
| Total Deferred Credits and Other Liabilities | 1,306,303 | 1,270,381 |
|---|
| Long-Term Debt | 2,234,486 | 2,031,323 |
|---|
| Rate Reduction Bonds | 259,257 | 280,862 |
|---|
| Common Stockholder's Equity: |
|---|
| Common Stock | — | — |
|---|
| Capital Surplus, Paid In | 1,973,134 | 1,973,134 |
|---|
| Retained Earnings | 926,890 | 903,022 |
|---|
| Common Stockholder's Equity | 2,900,024 | 2,876,156 |
|---|
| Commitments and Contingencies (Note 9) |
|---|
| Total Liabilities and Capitalization | $7,234,180 | $7,029,231 |
|---|
| For the Three Months Ended June 30, | For the Six Months Ended June 30, |
|---|
| (Thousands of Dollars) | 2026 | 2025 | 2026 | 2025 |
|---|
| Operating Revenues | $333,940 | $303,133 | $717,457 | $651,114 |
|---|
| Operating Expenses: |
|---|
| Purchased Power and Transmission | 65,704 | 39,269 | 154,899 | 119,276 |
|---|
| Operations and Maintenance | 67,288 | 66,995 | 128,827 | 138,005 |
|---|
| Depreciation | 44,972 | 41,269 | 89,411 | 81,771 |
|---|
| Amortization of Regulatory Assets, Net | 8,249 | 26,829 | 34,899 | 47,665 |
|---|
| Energy Efficiency Programs | 7,824 | 10,542 | 18,313 | 22,745 |
|---|
| Taxes Other Than Income Taxes | 28,443 | 27,213 | 55,729 | 52,998 |
|---|
| Total Operating Expenses | 222,480 | 212,117 | 482,078 | 462,460 |
|---|
| Operating Income | 111,460 | 91,016 | 235,379 | 188,654 |
|---|
| Interest Expense | 26,699 | 20,503 | 55,316 | 41,073 |
|---|
| Other Income, Net | 10,358 | 13,725 | 20,861 | 24,484 |
|---|
| Income Before Income Tax Expense | 95,119 | 84,238 | 200,924 | 172,065 |
|---|
| Income Tax Expense | 23,128 | 20,323 | 49,156 | 41,871 |
|---|
| Net Income | $71,991 | $63,915 | $151,768 | $130,194 |
|---|
CONDENSED CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY
| For the Six Months Ended June 30, 2026 |
|---|
| Common Stock · CapitalSurplus,Paid In · RetainedEarnings · TotalCommonStockholder'sEquity |
|---|
| (Thousands of Dollars, Except Stock Information) · Stock · Amount |
|---|
| Balance as of January 1, 2026 | 301 | $— | $1,973,134 | $903,022 | $2,876,156 |
|---|
| Net Income | | 79,777 | 79,777 | |
|---|
| Dividends on Common Stock | | (38,900) | (38,900) | |
|---|
| Balance as of March 31, 2026 | 301 | — | 1,973,134 | 943,899 | 2,917,033 |
|---|
| Net Income | | 71,991 | 71,991 | |
|---|
| Dividends on Common Stock | | (89,000) | (89,000) | |
|---|
| Balance as of June 30, 2026 | 301 | $— | $1,973,134 | $926,890 | $2,900,024 |
|---|
| For the Six Months Ended June 30, 2025 |
|---|
| Common Stock · CapitalSurplus,Paid In · RetainedEarnings · TotalCommonStockholder'sEquity |
|---|
| (Thousands of Dollars, Except Stock Information) · Stock · Amount |
|---|
| Balance as of January 1, 2025 | 301 | $— | | $1,898,134 | $808,668 | $2,706,802 |
|---|
| Net Income | | 66,279 | 66,279 | |
|---|
| Capital Contributions from Eversource Parent | | 75,000 | | 75,000 | |
|---|
| Balance as of March 31, 2025 | 301 | — | | 1,973,134 | 874,947 | 2,848,081 |
|---|
| Net Income | | 63,915 | 63,915 | |
|---|
| Dividends on Common Stock | | (175,000) | (175,000) | |
|---|
| Balance as of June 30, 2025 | 301 | $— | | $1,973,134 | $763,862 | $2,736,996 |
|---|
| For the Six Months Ended June 30, |
|---|
| (Thousands of Dollars) | 2026 | 2025 |
|---|
| Operating Activities: |
|---|
| Net Income | $151,768 | $130,194 |
|---|
| Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities: |
|---|
| Depreciation | 89,411 | 81,771 |
|---|
| Deferred Income Taxes | 14,690 | 13,943 |
|---|
| Uncollectible Expense | 2,627 | 2,447 |
|---|
| Pension, SERP and PBOP Income, Net | (5,230) | (4,444) |
|---|
| Regulatory Under Recoveries, Net | (5,870) | (36,271) |
|---|
| Amortization of Regulatory Assets, Net | 34,899 | 47,665 |
|---|
| Cost of Removal Expenditures | (11,617) | (16,545) |
|---|
| Other | (6,052) | (13,837) |
|---|
| Changes in Current Assets and Liabilities: |
|---|
| Receivables and Unbilled Revenues, Net | 1,183 | (16,547) |
|---|
| Taxes Receivable/Accrued, Net | (4,009) | (3,076) |
|---|
| Accounts Payable | (10,963) | 6,151 |
|---|
| Other Current Assets and Liabilities, Net | (19,936) | 483 |
|---|
| Net Cash Flows Provided by Operating Activities | 230,901 | 191,934 |
|---|
| Investing Activities: |
|---|
| Investments in Property, Plant and Equipment | (197,386) | (275,508) |
|---|
| Net Cash Flows Used in Investing Activities | (197,386) | (275,508) |
|---|
| Financing Activities: |
|---|
| Cash Dividends on Common Stock | (127,900) | (175,000) |
|---|
| Capital Contributions from Eversource Parent | — | 75,000 |
|---|
| Issuance of Long-Term Debt | 200,000 | 300,000 |
|---|
| Repayment of Rate Reduction Bonds | (21,605) | (21,605) |
|---|
| Decrease in Notes Payable to Eversource Parent | (47,200) | (95,800) |
|---|
| Other Financing Activities | 1,674 | (1,627) |
|---|
| Net Cash Flows Provided by Financing Activities | 4,969 | 80,968 |
|---|
| Net Increase/(Decrease) in Cash, Cash Equivalents and Restricted Cash | 38,484 | (2,606) |
|---|
| Cash, Cash Equivalents and Restricted Cash - Beginning of Period | 55,186 | 37,243 |
|---|
| Cash, Cash Equivalents and Restricted Cash - End of Period | $93,670 | $34,637 |
|---|